/* 将所有CSS直接写在这里 */
/* buttons.css */
.button {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all 0.2s;
}

.button-primary {
    background: var(--primary);
    color: var(--white);
}

/* cards.css */
.card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
}

/* 其他CSS组件... */

:root {
    /* 现代化色彩系统 */
    --primary: #3b82f6;
    --primary-dark: #1e40af;
    --primary-light: #dbeafe;
    --secondary: #8b5cf6;
    --secondary-light: #ede9fe;
    --accent: #06b6d4;
    --accent-light: #cffafe;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* 中性色系 */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* 语义化颜色 */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-500);
    --bg-primary: #ffffff;
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    --border-light: var(--gray-200);
    --border-medium: var(--gray-300);

    /* 现代化字体系统 */
    --font-sans: 'Inter', system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* 扩展间距系统 */
    --space-0: 0;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* 现代化圆角系统 */
    --radius-none: 0;
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;

    /* 现代化阴影系统 */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

    /* 现代化动画曲线 */
    --ease-linear: linear;
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* 现代化过渡时间 */
    --duration-75: 75ms;
    --duration-100: 100ms;
    --duration-150: 150ms;
    --duration-200: 200ms;
    --duration-300: 300ms;
    --duration-500: 500ms;
    --duration-700: 700ms;
    --duration-1000: 1000ms;

    /* 现代化字体大小 */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* 现代化行高 */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* 现代化字重 */
    --font-thin: 100;
    --font-extralight: 200;
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    --font-black: 900;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-weight: var(--font-normal);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
}

/* 云厂商风格导航栏 */
header {
    background: #fff;
    border-bottom: 1px solid #e8e8e8;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all var(--duration-300) var(--ease-out);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--space-8);
    position: relative;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #333;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: 4px;
    transition: all var(--duration-200) var(--ease-out);
}

.mobile-menu-toggle:hover {
    background: #f5f5f5;
    color: var(--primary);
}

header.scrolled {
    background: #fff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid #e0e0e0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.375rem;
    font-weight: 600;
    color: #1a1a1a;
    text-decoration: none;
    transition: opacity var(--duration-200) var(--ease-out);
    position: relative;
    padding: var(--space-2) 0;
    letter-spacing: -0.01em;
    line-height: 1;
}

.logo:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 32px;
    height: 32px;
    margin-right: var(--space-3);
    background: linear-gradient(135deg, 
        var(--primary) 0%, 
        #1e3a8a 100%);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: white;
    transition: all var(--duration-200) var(--ease-out);
}

.logo:hover .logo-icon {
    opacity: 0.9;
}

.logo-text {
    font-weight: 600;
    letter-spacing: -0.01em;
    font-size: 1.375rem;
    line-height: 1;
    color: #1a1a1a;
}

nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-1);
    align-items: center;
    margin: 0;
}

nav ul li a,
nav ul li .nav-item {
    text-decoration: none;
    color: #333;
    font-weight: 400;
    font-size: 0.875rem;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all var(--duration-200) var(--ease-out);
    position: relative;
    letter-spacing: 0;
    line-height: 1.5;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    white-space: nowrap;
}

nav ul li a:hover,
nav ul li .nav-item:hover {
    color: var(--primary);
    background: #f5f5f5;
}

nav ul li a.active,
nav ul li .nav-item.active {
    color: var(--primary);
    background: #e6f0ff;
    font-weight: 500;
}

/* 云厂商风格下拉菜单 */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    color: #333;
    font-weight: 400;
    font-size: 0.875rem;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all var(--duration-200) var(--ease-out);
    cursor: pointer;
    font-family: inherit;
    position: relative;
    letter-spacing: 0;
    line-height: 1.5;
    white-space: nowrap;
}

.dropdown-trigger:hover {
    color: var(--primary);
    background: #f5f5f5;
}

.dropdown:hover .dropdown-trigger {
    color: var(--primary);
    background: #e6f0ff;
}

.dropdown-arrow {
    transition: transform var(--duration-200) var(--ease-out);
    font-size: 14px;
}

.dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-content {
    display: none;
    position: absolute;
    background: #fff;
    min-width: 200px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    z-index: 1001;
    border-radius: 4px;
    border: 1px solid #e8e8e8;
    top: calc(100% + 4px);
    left: 0;
    overflow: hidden;
    animation: dropdownFadeIn var(--duration-200) var(--ease-out);
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes mobileMenuSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-content a {
    color: #333;
    padding: 12px 16px;
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: all var(--duration-200) var(--ease-out);
    border-bottom: 1px solid #f0f0f0;
    position: relative;
    font-size: 0.875rem;
}

.dropdown-content a:last-child {
    border-bottom: none;
}

.dropdown-content a:hover {
    background: #f5f8ff;
    color: var(--primary);
}

.dropdown-content a:hover .dropdown-item-icon {
    transform: scale(1.05);
}

/* 二级菜单内容样式 */
.dropdown-item-content {
    display: flex;
    align-items: center;
    width: 100%;
    gap: 12px;
}

.dropdown-item-icon {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--duration-200) var(--ease-out);
    font-size: 1rem;
    margin-right: var(--space-3);
}

.dropdown-item-icon img {
    width: 16px;
    height: 16px;
    object-fit: contain;
}

.dropdown-item-icon.ai {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.dropdown-item-icon.cicd {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.dropdown-item-text {
    flex: 1;
    text-align: left;
    font-weight: 400;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown:hover > a {
    color: #1890ff;
}

/* 增加鼠标移动的容错区域 */
.dropdown::before {
    content: '';
    position: absolute;
    top: 100%;
    left: -10px;
    right: -10px;
    height: 10px;
    background: transparent;
    z-index: 1000;
}

.login-btn {
    padding: 7px 20px;
    background: var(--primary);
    color: white;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 400;
    font-size: 0.875rem;
    transition: all var(--duration-200) var(--ease-out);
    border: 1px solid var(--primary);
    white-space: nowrap;
}

.login-btn:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* 现代化Banner样式 */
.banner {
    margin-top: 64px;
    min-height: 600px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.banner-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.banner-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: var(--space-6);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.banner h1 {
    font-size: var(--text-5xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-6);
    line-height: var(--leading-tight);
    letter-spacing: -0.025em;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.banner p {
    font-size: var(--text-xl);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
    opacity: 0.9;
    max-width: 600px;
}

.banner-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.banner-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    background-color: white;
    color: var(--primary);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-semibold);
    transition: all var(--duration-200) var(--ease-out);
    box-shadow: var(--shadow-md);
}

.banner-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.banner-btn.secondary {
    background-color: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.banner-btn.secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.banner-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    max-width: 500px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-1);
    color: white;
}

.stat-label {
    font-size: var(--text-sm);
    opacity: 0.8;
    color: white;
}

/* 服务介绍样式 */
.services {
    padding: 80px 0;
    text-align: center;
}

.services h2 {
    font-size: 32px;
    margin-bottom: 50px;
    color: #333;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: var(--white);
    padding: var(--space-5);
    transition: transform 0.3s var(--ease-out);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.service-card h3 {
    font-size: 20px;
    margin: 20px 0 10px;
}

.service-card p {
    color: #666;
    margin-bottom: 20px;
}

.learn-more {
    color: #1890ff;
    text-decoration: none;
    font-weight: 500;
}

/* 现代化优势部分样式 */
.advantages {
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    padding: var(--space-20) 0;
    position: relative;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(59,130,246,0.1)"/><circle cx="80" cy="40" r="1.5" fill="rgba(139,92,246,0.1)"/><circle cx="40" cy="80" r="1" fill="rgba(59,130,246,0.1)"/></svg>');
    opacity: 0.5;
}

.advantages .container {
    position: relative;
    z-index: 1;
}

.advantages h2 {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    text-align: center;
    margin-bottom: var(--space-16);
    color: var(--text-primary);
    line-height: var(--leading-tight);
}

.advantage-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
}

.advantage-item {
    background: var(--bg-primary);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all var(--duration-300) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    opacity: 0;
    transition: opacity var(--duration-300) var(--ease-out);
}

.advantage-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.advantage-item:hover::before {
    opacity: 0.05;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-6);
    transition: all var(--duration-300) var(--ease-out);
    position: relative;
    z-index: 1;
}

.advantage-item-green .advantage-icon {
    background: linear-gradient(135deg, #d1fae5, var(--success));
    color: var(--success);
}

.advantage-item-blue .advantage-icon {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: var(--primary);
}

.advantage-item-purple .advantage-icon {
    background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
    color: var(--secondary);
}

.advantage-item:hover .advantage-icon {
    transform: scale(1.1) rotate(-5deg);
}

.advantage-item h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.advantage-item p {
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    position: relative;
    z-index: 1;
}

/* 现代化客户案例样式 */
.clients {
    padding: var(--space-20) 0;
    text-align: center;
    background-color: var(--bg-primary);
}

.clients h2 {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    line-height: var(--leading-tight);
}

.clients p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-16);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: var(--leading-relaxed);
}

.client-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-16);
}

.client-stat-item {
    text-align: center;
    padding: var(--space-6);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all var(--duration-300) var(--ease-out);
}

.client-stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.client-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
}

.client-stat-number {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.client-stat-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: var(--font-medium);
}

.industries-section {
    margin-top: var(--space-16);
}

.industries-section h3 {
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    text-align: center;
    margin-bottom: var(--space-8);
    color: var(--text-primary);
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-4);
    max-width: 800px;
    margin: 0 auto;
}

.industry-tag {
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    color: var(--text-primary);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-full);
    text-align: center;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: all var(--duration-200) var(--ease-out);
    border: 1px solid var(--border-light);
}

.industry-tag:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

/* 现代化页脚样式 */
footer {
    background: linear-gradient(135deg, var(--gray-900), var(--gray-800));
    color: white;
    padding: var(--space-20) 0 var(--space-8);
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    opacity: 0.3;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr repeat(4, 1fr);
    gap: var(--space-12);
    position: relative;
    z-index: 1;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.footer-logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-logo-text {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: white;
}

.footer-description {
    color: var(--gray-300);
    line-height: var(--leading-relaxed);
    margin-bottom: var(--space-6);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--gray-300);
    font-size: var(--text-sm);
}

.contact-item svg {
    color: var(--primary);
    flex-shrink: 0;
}

.footer-column h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-6);
    color: white;
    position: relative;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: -var(--space-2);
    left: 0;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: var(--space-3);
}

.footer-column ul li a {
    color: var(--gray-300);
    text-decoration: none;
    transition: all var(--duration-200) var(--ease-out);
    font-size: var(--text-sm);
    display: inline-block;
    padding: var(--space-1) 0;
}

.footer-column ul li a:hover {
    color: white;
    transform: translateX(var(--space-2));
}

.copyright {
    text-align: center;
    margin-top: var(--space-16);
    padding-top: var(--space-8);
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
    font-size: var(--text-sm);
    position: relative;
    z-index: 1;
}

.copyright p {
    margin-bottom: var(--space-2);
}

.copyright p:last-child {
    margin-bottom: 0;
}

.copyright a {
    color: inherit;
    text-decoration: none;
    transition: color var(--duration-200) var(--ease-out);
}

.copyright a:hover {
    color: var(--primary);
}

.security-section {
    margin-top: var(--space-6);
}

.security-card {
    max-width: 800px;
    margin: 0 auto;
}

.solutions {
    padding: 100px 0;
    background: linear-gradient(180deg, #ffffff 0%, #fafafa 100%);
}

.section-title {
    text-align: center;
    margin-bottom: 64px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: #1a1a1a;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.section-title p {
    font-size: 1.125rem;
    color: #525252;
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.7;
    font-weight: 400;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

.solution-card {
    background: #ffffff;
    border-radius: 12px;
    padding: 32px 24px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    border: 1px solid #e5e5e5;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
    border-color: #d4d4d4;
}

.solution-card:hover::before {
    transform: scaleX(1);
}

.solution-icon {
    width: 56px;
    height: 56px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.solution-card-blue .solution-icon {
    background: #e6f0ff;
    color: #0066ff;
}

.solution-card-purple .solution-icon {
    background: #eef2ff;
    color: #6366f1;
}

.solution-card-yellow .solution-icon {
    background: #fef3c7;
    color: #f59e0b;
}

.solution-card-green .solution-icon {
    background: #d1fae5;
    color: #10b981;
}

.solution-card:hover .solution-icon {
    transform: translateY(-4px);
}

.solution-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
    line-height: 1.4;
}

.solution-card h3 a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.solution-card h3 a:hover {
    color: var(--primary);
}

.solution-arrow {
    transition: transform 0.2s ease;
    font-size: 14px;
}

.solution-card h3 a:hover .solution-arrow {
    transform: translateX(4px);
}

.solution-card p {
    color: #525252;
    line-height: 1.6;
    margin: 0;
    font-size: 0.875rem;
}

/* Solutions区域响应式 */
@media (max-width: 1280px) {
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .solutions {
        padding: 80px 0;
    }
    
    .section-title {
        margin-bottom: 48px;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .section-title p {
        font-size: 1rem;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .solution-card {
        padding: 28px 20px;
    }
}

@media (max-width: 480px) {
    .solutions {
        padding: 64px 0;
    }
    
    .section-title h2 {
        font-size: 1.75rem;
    }
    
    .section-title p {
        font-size: 0.9375rem;
    }
}

/* 织女AI页面样式 */
.zhinv-ai-page {
    margin-top: 64px;
}

/* Hero Section */
.zhinv-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--space-20) 0;
    position: relative;
    overflow: hidden;
}

.zhinv-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="ai-grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23ai-grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s var(--ease-out);
}

.hero-content.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: var(--space-8);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.zhinv-hero h1 {
    font-size: var(--text-6xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-6);
    line-height: var(--leading-tight);
    letter-spacing: -0.025em;
}

.zhinv-hero .gradient-text {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-top: var(--space-2);
}

.hero-description {
    font-size: var(--text-xl);
    margin-bottom: var(--space-10);
    line-height: var(--leading-relaxed);
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-16);
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-semibold);
    transition: all var(--duration-200) var(--ease-out);
    box-shadow: var(--shadow-md);
}

.hero-btn.primary {
    background-color: white;
    color: #667eea;
}

.hero-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hero-btn.secondary {
    background-color: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.hero-btn.secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
    max-width: 800px;
    margin: 0 auto;
}

.hero-stats .stat-item {
    text-align: center;
    padding: var(--space-4);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-stats .stat-icon {
    color: #fbbf24;
    margin-bottom: var(--space-2);
}

.hero-stats .stat-number {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-1);
    color: white;
}

.hero-stats .stat-label {
    font-size: var(--text-sm);
    opacity: 0.8;
    color: white;
}

/* Features Section */
.zhinv-features {
    padding: var(--space-20) 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.zhinv-features .section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.zhinv-features .section-header h2 {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    line-height: var(--leading-tight);
}

.zhinv-features .section-header p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: var(--leading-relaxed);
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
}

.features-nav {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

.feature-nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    background: white;
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--duration-200) var(--ease-out);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
}

.feature-nav-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.feature-nav-item.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.nav-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-content {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--space-12);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
}

.feature-main {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.feature-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-6);
    transition: all var(--duration-300) var(--ease-out);
}

.feature-main:hover .feature-icon {
    transform: scale(1.1) rotate(-5deg);
}

.feature-main h3 {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    line-height: var(--leading-tight);
}

.feature-main p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

.feature-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.detail-item svg {
    color: var(--success);
    flex-shrink: 0;
}

.feature-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: var(--primary);
    color: white;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-medium);
    transition: all var(--duration-200) var(--ease-out);
}

.feature-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Capabilities Section */
.zhinv-capabilities {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    position: relative;
}

.zhinv-capabilities::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(59,130,246,0.1)"/><circle cx="80" cy="40" r="1.5" fill="rgba(139,92,246,0.1)"/><circle cx="40" cy="80" r="1" fill="rgba(59,130,246,0.1)"/></svg>');
    opacity: 0.5;
}

.zhinv-capabilities .container {
    position: relative;
    z-index: 1;
}

.zhinv-capabilities .section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.zhinv-capabilities .section-header h2 {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    line-height: var(--leading-tight);
}

.zhinv-capabilities .section-header p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: var(--leading-relaxed);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-8);
    max-width: 1200px;
    margin: 0 auto;
}

.capability-card {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all var(--duration-300) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.capability-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    opacity: 0;
    transition: opacity var(--duration-300) var(--ease-out);
}

.capability-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.capability-card:hover::before {
    opacity: 0.05;
}

.capability-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-6);
    transition: all var(--duration-300) var(--ease-out);
    position: relative;
    z-index: 1;
}

.capability-card:hover .capability-icon {
    transform: scale(1.1) rotate(-5deg);
}

.capability-card h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.capability-card p {
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    position: relative;
    z-index: 1;
}

/* Use Cases Section */
.zhinv-use-cases {
    padding: var(--space-20) 0;
    background-color: var(--bg-primary);
}

.zhinv-use-cases .section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.zhinv-use-cases .section-header h2 {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    line-height: var(--leading-tight);
}

.zhinv-use-cases .section-header p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: var(--leading-relaxed);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
    max-width: 1200px;
    margin: 0 auto;
}

.use-case-card {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: all var(--duration-300) var(--ease-out);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.use-case-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.use-case-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.use-case-header h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.use-case-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.use-case-list li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    border-bottom: 1px solid var(--border-light);
}

.use-case-list li:last-child {
    border-bottom: none;
}

.use-case-list li svg {
    color: #fbbf24;
    flex-shrink: 0;
}

/* CTA Section */
.zhinv-cta {
    padding: var(--space-20) 0;
    background: linear-gradient(135deg, var(--gray-900), var(--gray-800));
    color: white;
    text-align: center;
    position: relative;
}

.zhinv-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="cta-dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23cta-dots)"/></svg>');
    opacity: 0.3;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    line-height: var(--leading-tight);
}

.cta-content p {
    font-size: var(--text-lg);
    margin-bottom: var(--space-8);
    opacity: 0.9;
    line-height: var(--leading-relaxed);
}

.cta-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-semibold);
    transition: all var(--duration-200) var(--ease-out);
    box-shadow: var(--shadow-md);
}

.cta-btn.primary {
    background-color: var(--primary);
    color: white;
}

.cta-btn.primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-btn.secondary {
    background-color: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.cta-btn.secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .zhinv-hero h1 {
        font-size: var(--text-5xl);
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
    
    .features-nav {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-nav-item {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .feature-details {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .zhinv-ai-page {
        margin-top: 56px;
    }
    
    .zhinv-hero {
        padding: var(--space-16) 0;
    }
    
    .zhinv-hero h1 {
        font-size: var(--text-4xl);
    }
    
    .hero-description {
        font-size: var(--text-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .zhinv-features,
    .zhinv-capabilities,
    .zhinv-use-cases,
    .zhinv-cta {
        padding: var(--space-16) 0;
    }
    
    .zhinv-features .section-header h2,
    .zhinv-capabilities .section-header h2,
    .zhinv-use-cases .section-header h2 {
        font-size: var(--text-3xl);
    }
    
    .capabilities-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-content h2 {
        font-size: var(--text-3xl);
    }
}

@media (max-width: 480px) {
    .zhinv-hero h1 {
        font-size: var(--text-3xl);
    }
    
    .hero-description {
        font-size: var(--text-base);
    }
    
    .zhinv-features .section-header h2,
    .zhinv-capabilities .section-header h2,
    .zhinv-use-cases .section-header h2 {
        font-size: var(--text-2xl);
    }
    
    .cta-content h2 {
        font-size: var(--text-2xl);
    }
}

/* 弹窗样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(4px);
    animation: modalFadeIn var(--duration-300) var(--ease-out);
}

.modal-content {
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    position: relative;
    animation: modalSlideIn var(--duration-300) var(--ease-out);
}

.video-modal {
    width: 1000px;
    max-width: 95vw;
}

.contact-modal {
    width: 600px;
    max-width: 90vw;
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    background: rgba(0, 0, 0, 0.1);
    border: none;
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--duration-200) var(--ease-out);
    z-index: 1;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.2);
    transform: scale(1.1);
}

.modal-header {
    padding: var(--space-6) var(--space-8) var(--space-4);
    text-align: center;
    border-bottom: 1px solid var(--border-light);
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
    position: relative;
}

.modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(59,130,246,0.1)"/><circle cx="80" cy="40" r="1.5" fill="rgba(139,92,246,0.1)"/><circle cx="40" cy="80" r="1" fill="rgba(59,130,246,0.1)"/></svg>');
    opacity: 0.3;
}

.header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-2xl);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-3);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}

.modal-header h3 {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-2);
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.modal-header p {
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.video-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.video-container {
    padding: var(--space-6);
    display: flex;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a1a, #2d2d2d);
    position: relative;
}

.video-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    max-width: 800px;
    width: 100%;
}

.demo-video {
    width: 100%;
    height: auto;
    display: block;
    background: #000;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity var(--duration-300) var(--ease-out);
    pointer-events: auto;
    cursor: pointer;
}

.play-button {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--duration-300) var(--ease-out);
    box-shadow: var(--shadow-lg);
    pointer-events: none;
}

.video-overlay:hover .play-button {
    background: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.video-info {
    padding: 0 var(--space-6);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
}

.info-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--duration-200) var(--ease-out);
    border: 1px solid var(--border-light);
}

.info-item:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.info-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-content h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
    color: var(--text-primary);
}

.info-content p {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin: 0;
}

.contact-info {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.contact-info .contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--duration-200) var(--ease-out);
}

.contact-info .contact-item:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
    color: var(--text-primary);
}

.contact-details p {
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
}

.contact-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    transition: color var(--duration-200) var(--ease-out);
}

.contact-link:hover {
    color: var(--primary-dark);
}

.modal-footer {
    padding: var(--space-8);
    border-top: 1px solid var(--border-light);
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.footer-text h4 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-1);
    color: var(--text-primary);
}

.footer-text p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin: 0;
}

.footer-actions {
    display: flex;
    gap: var(--space-3);
}

.modal-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-medium);
    transition: all var(--duration-200) var(--ease-out);
    border: none;
    cursor: pointer;
    font-size: var(--text-sm);
}

.modal-btn.primary {
    background: var(--primary);
    color: white;
}

.modal-btn.primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.modal-btn.secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-medium);
}

.modal-btn.secondary:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* 弹窗动画 */
@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* 响应式弹窗 */
@media (max-width: 1024px) {
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-3);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-4);
    }
    
    .footer-actions {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .modal-content {
        margin: var(--space-4);
        max-width: calc(100vw - var(--space-8));
        max-height: calc(100vh - var(--space-8));
    }
    
    .video-modal {
        width: 100%;
    }
    
    .contact-modal {
        width: 100%;
    }
    
    .modal-header {
        padding: var(--space-6) var(--space-6) var(--space-4);
    }
    
    .header-icon {
        width: 48px;
        height: 48px;
    }
    
    .modal-header h3 {
        font-size: var(--text-2xl);
    }
    
    .modal-header p {
        font-size: var(--text-sm);
    }
    
    .video-container {
        padding: var(--space-4);
    }
    
    .video-info {
        padding: 0 var(--space-4);
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
    
    .info-item {
        padding: var(--space-3);
    }
    
    .info-icon {
        width: 32px;
        height: 32px;
    }
    
    .contact-info {
        padding: var(--space-4);
        gap: var(--space-4);
    }
    
    .contact-info .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--space-3);
    }
    
    .modal-footer {
        padding: var(--space-6) var(--space-4);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-4);
    }
    
    .footer-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .modal-btn {
        width: 100%;
        justify-content: center;
    }
}

/* 新增样式 */
.new-class {
    color: var(--primary);
}

/* 云厂商风格响应式设计 */
@media (max-width: 1024px) {
    .header-container {
        height: 60px;
        padding: 0 var(--space-6);
    }
    
    nav ul {
        gap: 0;
    }
    
    nav ul li a,
    nav ul li .nav-item {
        padding: 6px 12px;
        font-size: 0.8125rem;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .logo-icon {
        width: 28px;
        height: 28px;
    }
    
    .logo-text {
        font-size: 1.25rem;
    }
    
    .banner h1 {
        font-size: var(--text-4xl);
    }
    
    .banner p {
        font-size: var(--text-lg);
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 56px;
        padding: 0 var(--space-4);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav {
        display: none;
    }
    
    .nav.nav-open {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
        border-top: 1px solid #e8e8e8;
        padding: var(--space-3);
        animation: mobileMenuSlideIn var(--duration-200) var(--ease-out);
    }
    
    .nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    .nav ul li a,
    .nav ul li .nav-item,
    .nav ul li .dropdown-trigger {
        font-size: 0.875rem;
        padding: 10px 12px;
        display: block;
        border-radius: 4px;
        font-weight: 400;
    }
    
    /* 移动端下拉菜单样式 */
    .dropdown-content {
        position: static;
        display: block;
        background: #f8f8f8;
        border-radius: 4px;
        margin: var(--space-1) 0;
        box-shadow: none;
        border: 1px solid #e8e8e8;
        min-width: auto;
    }
    
    .dropdown-content a {
        padding: 10px 12px;
        border-bottom: 1px solid #e8e8e8;
    }
    
    .dropdown-content a:last-child {
        border-bottom: none;
    }
    
    .dropdown-item-content {
        gap: var(--space-2);
    }
    
    .dropdown-item-icon {
        width: 24px;
        height: 24px;
    }
    
    .dropdown-item-icon img {
        width: 14px;
        height: 14px;
    }

    .logo {
        font-size: 1.125rem;
    }

    .logo-icon {
        width: 28px;
        height: 28px;
        font-size: 0.875rem;
        margin-right: var(--space-2);
        border-radius: 6px;
    }
    
    .logo-text {
        font-size: 1.125rem;
    }
    
    .login-btn {
        font-size: 0.8125rem;
        padding: 6px 16px;
    }
    
    .banner {
        margin-top: 56px;
        min-height: 500px;
        padding: var(--space-16) 0;
    }
    
    .banner h1 {
        font-size: var(--text-3xl);
        margin-bottom: var(--space-4);
    }
    
    .banner p {
        font-size: var(--text-base);
        margin-bottom: var(--space-6);
    }
    
    .banner-actions {
        flex-direction: column;
        gap: var(--space-3);
    }
    
    .banner-btn {
        justify-content: center;
    }
    
    .banner-stats {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .solutions {
        padding: var(--space-16) 0;
    }
    
    .section-title h2 {
        font-size: var(--text-3xl);
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .solution-card {
        padding: var(--space-6);
    }
    
    .advantages {
        padding: var(--space-16) 0;
    }
    
    .advantages h2 {
        font-size: var(--text-3xl);
    }
    
    .advantage-list {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .advantage-item {
        padding: var(--space-6);
    }
    
    .clients {
        padding: var(--space-16) 0;
    }
    
    .clients h2 {
        font-size: var(--text-3xl);
    }
    
    .client-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }
    
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-3);
    }
    
    footer {
        padding: var(--space-16) 0 var(--space-6);
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .footer-brand {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .header-container {
        padding: 0 var(--space-3);
        height: 56px;
    }
    
    .logo {
        font-size: 1rem;
    }
    
    .logo-icon {
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }
    
    .logo-text {
        font-size: 1rem;
    }
    
    .login-btn {
        font-size: 0.75rem;
        padding: 5px 12px;
    }
    
    .banner {
        margin-top: 56px;
    }
    
    .banner h1 {
        font-size: var(--text-2xl);
    }
    
    .banner p {
        font-size: var(--text-sm);
    }
    
    .section-title h2 {
        font-size: var(--text-2xl);
    }
    
    .advantages h2 {
        font-size: var(--text-2xl);
    }
    
    .clients h2 {
        font-size: var(--text-2xl);
    }
    
    .client-logos {
        grid-template-columns: 1fr;
    }
}

/* 现代化动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 滚动动画类 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--duration-700) var(--ease-out);
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 悬停动画效果 */
.hover-lift {
    transition: transform var(--duration-300) var(--ease-out);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

.hover-scale {
    transition: transform var(--duration-300) var(--ease-out);
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-rotate {
    transition: transform var(--duration-300) var(--ease-out);
}

.hover-rotate:hover {
    transform: rotate(5deg);
}

/* 加载动画 */
.loading-shimmer {
    background: linear-gradient(90deg, 
        var(--gray-200) 25%, 
        var(--gray-100) 50%, 
        var(--gray-200) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* 增强可访问性 */
a:focus {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
}

button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* 懒加载图片样式 */
.lazy-image {
    transition: opacity var(--duration-300) var(--ease-out);
}

.lazy-image.loading {
    opacity: 0.7;
    filter: blur(2px);
}

.lazy-image.loaded {
    opacity: 1;
    filter: blur(0);
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.image-preview-container {
    width: 100%;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}
.image-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
}

.item-card {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    min-height: 180px;
}
.item-card .col-md-4, .item-card .col-md-8 {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

@media (max-width: 768px) {
    .item-card .row {
        flex-direction: column;
    }
    .image-preview-container {
        height: 120px;
    }
}
